How to uniformly sample the surface of a sphere?

16 次查看（过去 30 天）
Davide Mori
Davide Mori 2020-9-30
编辑： Bruno Luong 2021-3-7
Hi,
could someone help me to find a way of generating uniformly distributed samples over the surface of a sphere? I need something like 1400 sample over it. Moreover, I would like to obtain the spherical coordinates of each sample.
Thank you :)

请先登录，再回答此问题。

采纳的回答

Bruno Luong
Bruno Luong 2020-9-30
编辑：Bruno Luong 2020-9-30
There are few methods avialable on File exchange such as this one.
  4 个评论
显示 2更早的评论
Davide Mori
Davide Mori 2020-9-30
That's because I was using the function called
function [V,Tri,Ue_i,Ue]=ParticleSampleSphere(varargin)
% Generate an approximately uniform triangular tessellation of a unit
% sphere by minimizing generalized electrostatic potential energy
% (i.e., Reisz s-energy) of a system of charged particles. Effectively,
% this function produces a locally optimal solution to the problem that
% involves finding a minimum Reisz s-energy configuration of N equally
% charged particles confined to the surface of a unit sphere; s=1
% corresponds to the problem originally posed by J.J. Thomson.
But Maybe I got confused by the alert that said "particle limit exceeded".
Anyway it seems like it returns the vertex of the sphere on both the functions, now I need to understand if I want to choose either one method or the other. What do you suggest?
Bruno Luong
Bruno Luong 2020-9-30
I can't suggest anything relevant without knowing what you intend to do with the points.

请先登录，再进行评论。

更多回答（1 个）

Gary Cofer
Gary Cofer 2021-3-5
编辑：Bruno Luong 2021-3-7
For a realtime acqusition of data that can be cut short, a 3D Halton series works very well.

类别

在 Help Center 和 File Exchange 中查找有关 Surface and Mesh Plots 的更多信息

标签

产品


版本

R2020b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by